$project->update;

    $project->update;

    my %jobsetNames;
    foreach my $param (keys %{$c->request->params}) {
        next unless $param =~ /^jobset-(\w+)-name$/;
        my $baseName = $1;
        next if $baseName eq "template";
        my $jobsetName = $c->request->params->{"jobset-$baseName-name"};
        die "Invalid jobset name: $jobsetName" unless $jobsetName =~ /^[[:alpha:]]\w*$/;
        my $nixExprPath = $c->request->params->{"jobset-$baseName-nixexprpath"};
        die "Invalid Nix expression path: $nixExprPath" unless $nixExprPath =~ /^\w++$/; # !!! stricter
        my $nixExprInput = $c->request->params->{"jobset-$baseName-nixexprinput"};
        die "Invalid Nix expression input name: $nixExprInput" unless $nixExprInput =~ /^\w+$/;
        $jobsetNames{$jobsetName} = 1;
        if ($baseName =~ /^\d+$/) { # numeric base name is auto-generated, i.e. a new entry
            my $jobset = $c->model('DB::Jobsets')->create(
                { project => $project->name
                , name => $jobsetName
                , description => $c->request->params->{"jobset-$baseName-description"}
                , nixexprpath => $nixExprPath
                , nixexprinput => $nixExprInput
                });
        } else { # it's an existing jobset
            (my $jobset) = $project->jobsets->search({name => $baseName});
            die unless defined $jobset;
            $jobset->name($jobsetName);
            $jobset->description($c->request->params->{"jobset-$baseName-description"});
            $jobset->nixexprpath($nixExprPath);
            $jobset->nixexprinput($nixExprInput);
            $jobset->update;
        }
    }
    # Get rid of deleted jobsets, i.e., ones that are no longer submitted in the parameters.
    my @jobsets = $project->jobsets->all;
    foreach my $jobset (@jobsets) {
        $jobset->delete unless defined $jobsetNames{$jobset->name};
    }

    margin-top: 2em;

    margin-top: 1.5em;

}
div.indent {
    padding-left: 2em;

div.template {
    display: none;
}

    <input type='text' class='string' [% HTML.attributes(name => param, value => value) %] />

    <input type="text" class="string" [% HTML.attributes(id => param, name => param, value => value) %] />

[% IF edit %]
  <form action="[% IF create %][% c.uri_for('/createproject/submit') %][% ELSE %][% c.uri_for('/project' curProject.name 'submit') %][% END %]" method="post">
[% END %]

[% BLOCK renderJobset %]

[% IF create %]
  <h1>New Project</h1>
[% ELSE %]
  <h1>Project <tt>[% curProject.name %]</tt></h1>
[% END %]
<h2>General information</h2>
<table>
  [% IF edit %]
  <tr>
    <th>Identifier:</th>
    <td><tt>[% INCLUDE maybeEditString param="name" value=curProject.name %]</tt></td>
  </tr>
  [% END %]
  <tr>
    <th>Display name:</th>
    <td>[% INCLUDE maybeEditString param="displayname" value=curProject.displayname %]</td>
  </tr>
  <tr>
    <th>Description:</th>
    <td>[% INCLUDE maybeEditString param="description" value=curProject.description %]</td>
  </tr>
</table>
<h2>Definition</h2>
[% IF curProject.jobsets.size > 0 %]

  <div class="indent jobset">

[% FOREACH jobset IN curProject.jobsets -%]

  <h3>Jobset <tt>[% INCLUDE maybeEditString param="jobset-$baseName-name" value=jobset.name %]</tt></h3>

  <h3>Jobset <tt>[% jobset.name %]</tt></h3>

  <div class="indent">  

    [% IF edit %]

      <th>Identifier:</th>
      <td><tt>[% INCLUDE maybeEditString value=jobset.name %]</tt></td>
    </tr>
    [% END %]
    <tr>

      <td>[% INCLUDE maybeEditString value=jobset.description %]</td>

      <td>[% INCLUDE maybeEditString param="jobset-$baseName-description" value=jobset.description %]</td>

      <td><tt>[% INCLUDE maybeEditString value=jobset.nixexprpath %]</tt> in input <tt>[% INCLUDE maybeEditString value=jobset.nixexprinput %]</tt></td>

      <td>
        <tt>[% INCLUDE maybeEditString param="jobset-$baseName-nixexprpath" value=jobset.nixexprpath %]</tt> in input
        <tt>[% INCLUDE maybeEditString param="jobset-$baseName-nixexprinput" value=jobset.nixexprinput %]</tt>
      </td>

[% END -%]

  [% IF edit %]
  <p><button onclick='$(this).parents(".jobset").remove()' id="jobset-[% baseName %]-delete">Delete this jobset</button></p>
  [% END %]
  </div>
  </div>
[% END %]
[% IF edit %]
  <form action="[% IF create %][% c.uri_for('/createproject/submit') %][% ELSE %][% c.uri_for('/project' curProject.name 'submit') %][% END %]" method="post">
[% END %]
[% IF create %]
  <h1>New Project</h1>
[% ELSE %]
  <h1>Project <tt>[% curProject.name %]</tt></h1>
[% END %]
<h2>General information</h2>
<table>
  [% IF edit %]
  <tr>
    <th>Identifier:</th>
    <td><tt>[% INCLUDE maybeEditString param="name" value=curProject.name %]</tt></td>
  </tr>
  [% END %]
  <tr>
    <th>Display name:</th>
    <td>[% INCLUDE maybeEditString param="displayname" value=curProject.displayname %]</td>
  </tr>
  <tr>
    <th>Description:</th>
    <td>[% INCLUDE maybeEditString param="description" value=curProject.description %]</td>
  </tr>
</table>
<h2>Jobsets</h2>
[% IF curProject.jobsets && curProject.jobsets.size > 0 || edit %]
  [% IF edit %]
    <p><button id="add-jobset">Add a new jobset</button></p>
    <div id="jobset-template" class="template">
      [% INCLUDE renderJobset jobset="" baseName="template" %]
    </div>
    
    <script>
      var id = 0;
      $("#add-jobset").click(function() {
        var newid = "jobset-" + id++;
        $("#jobset-template").clone(true).attr("id", newid).insertAfter($("#jobset-template")).show();
        $("#jobset-template-name", $("#" + newid)).attr("name", newid + "-name").attr("value", newid);
        $("#jobset-template-description", $("#" + newid)).attr("name", newid + "-description");
        $("#jobset-template-nixexprpath", $("#" + newid)).attr("name", newid + "-nixexprpath");
        $("#jobset-template-nixexprinput", $("#" + newid)).attr("name", newid + "-nixexprinput");
        return false;
      });
    </script>
  [% END %]

  [% FOREACH jobset IN curProject.jobsets -%]
    [% INCLUDE renderJobset jobset=jobset baseName=jobset.name %]
  [% END -%]

[% IF jobNames.size > 0 %]

[% IF jobName && jobNames.size > 0 %]

  <hr />

  <p><input type="submit" value="Apply" /></p>

  <p><input type="submit" value="[% IF create %]Create[% ELSE %]Apply changes[% END %]" /></p>

  <form action="[% c.uri_for('/project' curProject.name 'delete') %]" method="post">
    <p><input type="submit" value="Delete this project" /></p>
  </form>

  [% IF !create %]
    <form action="[% c.uri_for('/project' curProject.name 'delete') %]" method="post">
      <p><input id="delete-project" type="submit" value="Delete this project" /></p>
    </form>

    <script>
      $("#delete-project").click(function() {
        return confirm("Are you sure you want to delete this project?");
      });
    </script>
  [% END %]